Aircraft



FIG. 1 is front perspective view of an aircraft, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the views indicate subject matter that forms no part of the claimed design. 

CLAIM The ornamental design for an aircraft, as shown and described. 